If the diameter of a shaft subjected to torque alone, is doubled, then the horse power P can be increased to

If the diameter of a shaft subjected to torque alone, is doubled, then

1.	If the diameter of a shaft subjected to torque alone, is doubled, then the horse power P can be increased to
A.	16 P
B.	0.83333333333333
C.	0.66666666666667
D.	0.58333333333333
Answer» C. 0.66666666666667

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If the diameter of a shaft subjected to torque alone, is doubled, then the horse power P can be increased to

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